There is generally no requirement that written agreements in these circumstances need to be typed or handwritten. So an agreement for the sale of $600 in loose diamonds may be perfectly enforceable -- even if it was written with a ballpoint pen on Looney Tunes stationary.
Definition of install. 1  transitive verb. 2  1a : to place in an office or dignity by seating in a stall or official seatb : to induct into an office, rank, or order installed the new president. 3  2 : to establish in an indicated place, condition, or status installing herself in front of the fireplace.
According to the Online Etymology Dictionary, the word infrastructure has been used in English since 1887 and in French since 1875, originally meaning The installations that form the basis for any operation or system.